我正在使用 SVG 和 angular.js 开发一个大型项目,并且需要对 svg 指令模板的可靠支持。不幸的是,当 Angular 渲染模板时,它会创建 DOM 节点,而不是 SVG 节点。我目前的工作是使用 jquery.svg 自己管理创建和删除节点,但它会受到限制。示例:http ://plnkr.co/edit/Xk8wM3?p=preview
我想让指令element
成为实际的 svg 元素,而不是一些没有真正做任何事情的人造 DOM 元素。这将让我有效地使用 ng-repeat 和角度过滤器。
这是需要修复的 plunkr:http ://plnkr.co/edit/BPvGjf?p=preview
html
<svg>
<!--woot this one works-->
<shape d="M0,0L250,0L250,250L0,250z" fill="green"></shape>
<!--nesting directives doesn't work-->
<group>
<shape d="M0,0L150,0L150,150L0,150z" fill="red"></shape>
<shape d="M0,0L100,0L100,100L0,100z" fill="orange"></shape>
</group>
<!--ng repeat doesn't work-->
<shape d="{{square.path}}" fill="{{square.color}}" ng-repeat="square in squares | orderBy:'order'"></shape>
</svg>
javascript
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.squares = [{
path: "M0,0L50,0L50,50L0,50z",
color: 'blue',
order: 2
}, {
path: "M0,0L75,0L75,75L0,75z",
color: 'purple',
order: 1
}];
});
app.directive('group', function($compile) {
return {
restrict: 'E',
transclude: true,
compile: function(tElement, tAttr, transclude) {
var path = makeNode('g', tElement, tAttr);
tElement.append(path.cloneNode(true));
return function(scope, element) {
transclude(scope, function(clone, innerScope) {
element.append($compile(clone)(innerScope));
})
}
}
}
});
app.directive('shape', function() {
return {
restrict: 'E',
compile: function(tElement, tAttr) {
var path = makeNode('path', tElement, tAttr);
tElement.replaceWith(path.cloneNode(true));
return function(scope, element) {
}
}
}
})
/* Create a shape node with the given settings. */
function makeNode(name, element, settings) {
var svg = $(element).parents('svg')[0];
var parent = $(element).parent()[0];
var factory = $('#factory')[0] || $('body').append('<svg id="factory"></svg>').find('#factory')[0];
var ns = 'http://www.w3.org/2000/svg';
// I've tried using the factory here to create the node then clone
// it into the new svg, but since angular nodes are created child-first, it didn't work
var node = parent.ownerDocument.createElementNS(ns, name);
for (var attribute in settings) {
var value = settings[attribute];
if (value !== null && value !== null && !attribute.match(/\$/) &&
(typeof value !== 'string' || value !== '')) {
node.setAttribute(attribute, value);
}
}
parent.appendChild(node);
return node;
}